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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '52') AND (category.subclass = '165') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '52'; Subclass is '165';

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T / S Patent Date Description Patentee Category Assigned To
 1885
U 317,908 May 12, 1885 Electric Conductor for Wire Fence
Lightning protection for wire fence
WILLIAMSON, Charles
Lightning Rod Fence  
 1895
U 538,603 April 30, 1895 Lightning Rod
Hollow lightning rod with cup to divert water into the lower sections of the rod to improve conduction of current to ground
SIMPSON, Harvey
Lightning Rod  

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